linux-kernel - Re: [PATCH v4 01/25] mm: Introduce struct folio

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Message-ID: <20210318235645.GB3346@balbir-desktop>
Date:   Fri, 19 Mar 2021 10:56:45 +1100
From:   Balbir Singh <bsingharora@...il.com>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH v4 01/25] mm: Introduce struct folio

On Fri, Mar 05, 2021 at 04:18:37AM +0000, Matthew Wilcox (Oracle) wrote:
> A struct folio refers to an entire (possibly compound) page.  A function
> which takes a struct folio argument declares that it will operate on the
> entire compound page, not just PAGE_SIZE bytes.  In return, the caller
> guarantees that the pointer it is passing does not point to a tail page.
>

Is this a part of a larger use case or general cleanup/refactor where
the split between page and folio simplify programming?

Balbir Singh.